The fact that the system is based on private insurances gives the practioners an incentive to exploit the system simply by performing medical operations, usually tests, that provide no value at all or where the value is so small that it really does not justify the costs.
As an example, my doctors here in Zug recently wanted to send me into a competence center in Zürich university hospital for a consultation. In the competence center they insisted me to stay for the night even though my condition was not acute at all. Their only justification for this was that they wanted me to give a urin sample the following morning. At that point they had also already checked me in as an in-patient and told me that I now had to stay for the night or else my insurance company won't pay for the invoice. So I stayed.
I just received a copy from the invoice that was sent to my insurance company. It totals over 10k CHF, and the biggest contributor to this sum is, suprise suprise, the fact that I stayed overnight. I mean c'mon! In practise my insurance company is now paying thousands of francs from a urin sample and I wasted at least half a day from life!
And this is only an individual example as in general I felt that back here in Zug, and especially there in Zürich, they ran every test they could possibly think of having something to with my condition but I seriously doubt that all of them were actually that necessary. From patient's perspective this was of course great, because it's good to be sure and have as much information as possible, but I'm not sure that this makes that much sense from a systemic perspective.
What would have happened in Finland is that I would have been asked to take a piss into a cup at home and then bring the cup with me to the competence center. I would have had to wait several hours longer before I would have actually met a doctor but after that long wait they would have discharged me the same day to get me out the door as soon as possible. Also, through out the process they would have propably performed only half the amount of tests they did here.